I dont get it

[cordar]

In doing some reading and watching videos if im understanding this correctly referring to sub ohm tanks a lower ohm coil needs hire Watts to run correctly where a higher ohm coil only needs 20 to 30 watts to run correctly. I would think it would be the Oppisite. Why is this? Hope im making sense.

 

[DickyT]

The quick answer:
resistance generates heat.
The higher the resistance is, the lower the power needed to generate that heat is.

 

[cordar]

Thanks. I always thougt the higher resistance would need more wattage. Guess i was wrong. Thanks for clearing things up.

 

[DickyT]

Completely the opposite. The lower the resistance, the more efficient the circuit is. Which makes less heat generated if power is a constant. To get heat to be the constant, you have to up the power flowing through the circuit.

 

[BoomStick]

Lower resistance builds needing more power has nothing to do with the actual resistance. The wattage required to heat a build to a certain temp is determined by the amount of metal you're heating. More metal needs more power. Thicker wire (more metal) has lower resistance and adding coils in parallel (adding more metal) reduces resistance, but the lower resistance isn't what is causing the additional power requirement. The additional metal is.

 

[cordar]

Thanks for your replies. I think i get it.